WorksheetsMostly Cellular Junctions
Total questions: 14
Worksheet time: 8mins
Plasmodesmata in plant cells are analogous to what structure in animal cells?
Tight junctions
Gap junctions
Adhesion junctions
Vacuoles
Urine is confined to the human bladder in part due to the structure of junctions that connect the cells lining the bladder. These junctions form a barrier that prevents the exchange of ions and solutes between the blood and urine. What is the likely identity of these junctions?
Gap junctions
Tight junctions
Adhering junctions
Plasmodesmata
What type of cell junction would most likely be found in the intestinal tract?
Gap
Tight
Adhering
Plasmodesmata
Which type of cellular junction is prominent in cardiac myocytes and allows for a unified contraction of the heart? Hint: in order for these cells to contract in unison, ions need to flow rapidly between them.
Tight
Adhering
Gap
Plasmodesmata
Which of these correctly matches the cellular junction with its function?
Gap junctions prevent the flow of ions and water from one part of the body to another
Adhering junctions are branched network of proteins that are impermeable to fluids
Gap junctions are connections that directly connect the cytoplasm of two cells
Tight junctions are random, spot attachments between cells that prevent tearing of tissue
Platelets are small cellular fragments that have no nucleus. Their job is to clot together at tears and cuts in the skin to prevent bleeding out of the organism. Which type of junction would you expect to form between platelets?
Gap
Tight
Adhering
Plasmodesmata
The endosymbiosis hypothesis proposes that
a large cell engulfed and digested a smaller cell, exposing its enzymes for use by the larger cell.
two cells merged into one cell, improving the enzyme function of the new cell.
two cells were juxtaposed and one benefited from the other.
a small cell lived inside a larger cell to the benefit of both cells.
Cell membrane phospholipid heads are
Hydrophilic
Hydrophobic
Hydrodynamic
Hydroelectric
Which of the following structures are found only in animal cells?
Cell wall
Cytoskeleton
Chloroplast
Centrioles
Proteins with DNA that are found inside the nucleus are called
Centrioles
Chloroplast
Nucleolus
Chromatin
Which of the following is not a function of smooth ER?
packages and modifies protein into secretory vesicles
produces enzymes for detoxification in liver cells
stores calcium ions in muscle cells
produces enzymes important in the synthesis of lipids
Which of the following do plant centralized (main) vacuoles not store?
poison
water
waste
digestive enzymes
Contractile vacuoles function is for
maintaining food vesicles
water balance
creating lysosomes
ejecting poisons
The cell's cytoskeleton is important for
cellular shape
organelle organization
movement such as amoeboid
all of the above
